baber/WOPTO huggingface dataset:
Patent GB-1180367-A (GB)
Title: Production of Glycidol
IPC: C07D301/14
Filed: 1968-07-16
Abstract: 1,180,367. Production of glycidol. F.M.C. CORP. 16 July, 1968 [17 July, 1967], No. 33737/68. Heading C2C. A continuous process for the epoxidation of allyl alcohol by peracetic acid to produce glycidol comprises (a) introducing allyl alcohol into the distillation zone; (b) introducing a solution of up to 40% peracetic acid in an anhydrous, inert, organic solvent having an atmospheric boiling point of 110-180‹ C., into the distillation zone, the mole ratio of alcohol to acid being at least 101: 1; (c) distilling the peracetic acid and allyl alcohol upwards into a reaction zone enriched in allyl alcohol where rapid epoxidation takes place while maintaining the reaction zone at 30-90‹ C. and at a correspondingly reduced pressure; (d) allowing the reaction products, glycidol and acetic acid, and solvent to pass downwards in the distillation zone; and (e) continuously withdrawing the reaction products and solvent from the lower portion of the distillation zone and removing unreacted allyl alcohol and low-boiling byproducts as overhead vapours. The allyl alcohol and peracetic acid solutions may be premixed before entry into the distillation zone and the allyl alcohol separated from the overhead vapours may be returned to the distillation zone. Inert organic solvents which may be used are butyl acetate, amyl acetate, butyl butyrate, ethylbenzene, ortho-xylene, pseudocumene, monochlorobenzene, orthodichlorobenzene, methyl heptyl ketone or diisobutyl ketone and the residence time of the reactants in the reaction zone may be 1-30 minutes.
Patent GB-327164-A (GB)
Title: Improvements in the manufacture and production of artificial threads, foils and the like
IPC: C08J7/12
Filed: 1928-11-17
Abstract: 327,164. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Nov. 17, 1928. Caoutchouc, synthetic, treatment of.-Threads and foils and the like prepared from solutions of synthetic polymerization products of diolefines with or without indiarubber, guttapercha, balata, &c., resins, cellulose derivatives, fillers, are treated with a sulphurizing-agent, preferably volatile, at a temperature not exceeding 100‹ C. The initial solutions are preferably purified by sedimentation, centrifuging, filtration, &c. The products are thin masses which do not show the extensibility of products made from natural indiarubber. The sulphurizing treatment may be for a long time at a lower temperature or for a shorter time at elevated temperatures. The sulphurizing agents include sulphur monochloride, sulphur monothiocyanate, hydrogen sulphide and sulphur dioxide with the addition, if desired, of selenium compounds. Anti-agers, e.g. aldol alpha naphthylamine or acetaldehyde alpha naphthylamine may also be incorporated in the solutions. In an example, a polymerization product of butadiene and a polymerization product of isoprene are dissolved in cyclohexane. The solution is poured on to a polished glass sheet and the solvent evaporated. The film obtained is exposed to the vapours from a solution of sulphur chloride in paraffin oil, until as hard as desired and then heated in an atmosphere of nitrogen or carbon dioxide until odourless. In another example a solution of a polymerization product of butadiene in methylene chloride is pressed through a spinning nozzle into a heated vertical pipe and then through a second pipe containing sulphur dichloride vapour. The remaining traces of sulphur dichloride are removed by heating or by treating with an alkaline bath. The threads are resistant to water and can be spun without difficulty. Reference has been directed by the Comptroller to Specification 205,532, [Class 70, Indiarubber &c.].
Patent GB-746288-A (GB)
Title: Improvements relating to dynamo-electric machines
Inventor: BARLOW ERNEST
IPC: H02K3/24
Filed: 1953-12-04
Abstract: 746,288. Cooling dynamo-electric machines. METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. Nov. 17, 1954 [Dec. 4, 1953], No. 33814/53. Class 35. Longitudinal ducts in at least the end portions of rotor conductors are traversed by air or hydrogen fed in by radially extending passages, radial passages displaced along the conductors being provided for the gas to leave. As shown, the conductors are shaped to provide axial passages 3 fed by sub-slots 8 at points near the end of the rotor, the inlet arrangement being as shown for the left-hand slot on Fig. 2, and the gas passes through the end windings and is exhausted to the airgap by outlets 5 arranged as shown in Figs. 3 and 2 (right-hand slot) adjacent end turns preferably causing gas flowing in opposite directions. Alternatively, or in addition, inlet ports may be provided in the end winding portions. The conductors can have a groove 15 in one or both sides, 16 representing insulation.
Patent GB-1107059-A (GB)
Title: Process for the dyeing, padding or printing of polyamide fibers
Inventor: GUNTHARD JACQUES
IPC: C09B62/56
Filed: 1965-08-06
Abstract: The reaction products of 1-amino-4-cyclo-hexylamino -anthraquinone, which cyclohexyl radical may carry alkyl radicals, with 1-halogeno-2,3-epoxypropan or dihalogenopropanol (wherein halogen is chlorine or bromine) are employed as disperse dyes to dye or print synthetic polyamide fibres.ALSO:Synthetic polyamide fibres are dyed or printed with disperse dyes which are the reaction products of 1-amino-4-cyclohexylaminoanthraquinone which may be unsubstituted or substituted by alkyl radicals, with 1-halogeno-2,3-epoxypropane or dihalogenopropanol in which halogen represents chlorine or bromine. The cyclohexyl radical may contain one or more alkyl radicals having up to 10C atoms in all.  The dyes may be applied with inionic or non-ionic surfactants (many specified) at pH 4-8 from dyebaths at 75-130 DEG C or by padding or printing and subsequently fixed with steam at 100-130 DEG C or hot air at 180-200 DEG C.  Known thickeners and adjuvents may also be used. Examples are given.
Patent GB-784086-A (GB)
Title: Improvements in mechanism for automatically stopping movement of machine-tool carriages
IPC: B23Q5/52
Filed: 1954-11-23
Abstract: 784,086. Lathe details. JEANNERET, J. L. Nov. 23, 1954, No. 33870/54. Class 83 (3). The saddle 4, Fig. 3, and cross-slide 5 of a lathe have stop means for disengaging the feed comprising, for the saddle, a plunger 105 which slides into a housing 108, after abutting stop L, to move a rod 127 pivoting a bell-crank 128 acting via rod 131 on an arm 155a, Fig. 5, extending from shaft 155 which controls a clutch in the feed mechanism. The stop means for the cross-slide comprise a plunger 138 sliding into a housing 139 when pushed by stop 5a on slide 5, thereby moving lever 141 which acts via rods 143, 145 on another arm 155b extending from the shaft 155. Projections 153, in an opening in the shaft, engage groove 152a, Fig. 4, in a clutch core 152 splined on shaft 149 which is driven by a wheel 148, by turning shaft 155 via handle 109 to engage dogs on either of pinions 150, 151 freely rotatable on shaft 149 and connected to drive the saddle and cross-slide, respectively. At the end of the appropriate feed, the shaft 155 is turned by rod 131 or 145 to disconnect the core from the pinion. A snap-action disconnecting movement is obtained by providing clearance between projections 153 and the groove 152a, and by providing a cam 116 on shaft 155 with diametrically-opposed grooves 121 engaged by spring-loaded levers 117. Specification 738,802 is referred to.
Patent GB-602575-A (GB)
Title: Production of perforated sheets of thermoplastic material
IPC: B29C48/91
Filed: 1945-12-14
Abstract: <PICT:0602575/IV(a)/1> Perforated sheets of organic thermoplastic material are produced by covering a heated metal surface engraved with intersecting grooves with a molten hot-melt thermoplastic material, removing excess material not in the grooves, and cooling the surface to solidify the material.  Hot-melt thermoplastic material is liquid above 100 DEG  C. and of a certain viscosity. Molten material such as polythene is fed from a nozzle 7 and a heated trough 8 on to a rotating roller 1 having the engraved surface.  A heated spreader bar 9 forces the material into the grooves and a heated doctor knife 10 removes excess material.  Running water 3 in the cylinder and a cooled roller 11 solidify the material which is removed on the roller 11.  The roller 1 is supported and rotated by the rollers 2, 11 and is heated by infra-red lamps 6.  The surface of the roller 1 is polished and coated with a film of a separating aid, such as high melting point grease, aluminium or zinc stearate, a glazing material such as sodium silicate or a detergent.  The roller is of stainless steel, mild steel, brass or aluminium.  Specification 516,807 is referred to.
Patent GB-1272786-A (GB)
Title: Motor compressors for small refrigerating machines
IPC: F25B31/02
Filed: 1969-07-04
Abstract: 1,272,786. Compressors. DANFOSS A. S. July 4, 1969 [July 4, 1968], No.33954/69. Heading F1N. The piston 3 of a compressor is reciprocated in a cylinder 2 by a crank-shaft 5 rotatably supported in bearings 4, 14 provided, respectively, in a motor support housing 1 and a cup-shaped insert 11 pressed into a bore 10 in the housing 1, and suction silencing chambers 6-9 are formed in the housing 1, the inter-connection between the chambers being provided by circumferential grooves 28, 29 cut in the surface of the bore 10. The radially inner open sides of the chambers 6-9 are closed by the insert 11. The groove 28 admits gas from a suction passage 26 into the chambers 6, 8, whereas the groove 29 connects the chambers 6, 8 to the chambers 7, 9, respectively, these latter chambers communicating through passages 42, 43 with a suction chamber in a cylinder head 22. Oil which collects in the chambers 6, 8 drains through the groove 29 and a bore 30 connected to the suction passage 26. A thrust plate carrying a crank balance weight 21 is fixed to the upper end of the crank-shaft 5.
Patent GB-1507146-A (GB)
Title: Bicomponent filaments
IPC: D01F8/12
Filed: 1975-07-31
Abstract: 1507146 Polyamide-polyurethane conjugate filaments COURTAULDS Ltd 31 July 1975 [1 Aug 1974] 33979/74 Heading B5B Conjugate filaments are prepared from a polyamide, preferably nylon 6, and a polyurethane. The polyurethane is formed by reaction between a diisocyanate, a non-polymeric diol, an amino alcohol and a prepolymer which is hydroxy-terminated and which is either a polyether or, preferably, a polyester. The amino alcohol must be one having the formula R<SP>1</SP>NHCH 2 R<SP>2</SP>CH 2 OH, where R<SP>1</SP> is hydrogen or an alkyl group having from 1 to 6 carbon atoms and R<SP>2</SP> is an alkylene group having 1 to 6 carbon atoms, a cycloalkylene or arylene group having 6 or 7 carbon atoms, or a covalent bond. The polyurethane must be so formulated that the ratio of equivalents of isocyanate groups to the total equivalents of hydroxy plus amino groups in the polyols and amino alcohol is between 1 : 1 and 1À05 : 1 and the polyurethane must have a melting point in the range of from 200-235‹ C. The preferred molar ratio of amino alcohol to diol is from 1 : 50 to 1 : 10. The exemplified amino alcohols are ethanolamine and 2-(t-butylamino)-ethanol and the diol 1,4-butanediol. The conjugate filament is preferably in sideby-side form and may be produced by meltspinning. It has latent crimp which is brought out by stretching.
Patent GB-345197-A (GB)
Title: Process for the manufacture of artificial masses
IPC: C08F12/08
Filed: 1929-11-07
Abstract: A powdered material is mixed with liquid styrene or with a homologue thereof or with an incompletely polymerized styrene, for example a solution of meta-styrene in styrene, and after polymerization or further polymerization to the required degree, is moulded.  a -Methyl-a -phenylethylene and paraethylstyrene are mentioned as homologues.  Specification 341,420 is referred to.ALSO:A powdered material is mixed with liquid styrene or with a homologue thereof or with an incompletely polymerized styrene, for example a solution of meta styrene in styrene, and after polymerization or further polymerization to the required degree, is moulded.  Specification 341,420 is referred to.
Patent GB-631248-A (GB)
Title: Improvements in or relating to cutting or shaping machines
IPC: B23Q35/20
Filed: 1946-11-16
Abstract: 631,248. Grinding. POWER JETS (RESEARCH & DEVELOPMENT), Ltd., and LEEDHAM, L. H. Nov. 16, 1946, No. 34043. [Class 60] [Also in Group XXII] In a grinding or milling machine for reproducing a work piece, particularly a gas turbine blade, to a reduced scale, basic longitudinal and transverse feeds are given to both the work piece and model, and supplementary feeds are provided for augmenting, in the case of the model, or diminishing, in the case of the workpiece, either or both of the basic feeds, so that the resultant feeds correspond to the desired reduction in scale. The model table h, Fig. 1, and work table p are mounted on ways arranged at right angles to each other on a slide c mounted on an upper main slide f which is fed transversely to the model and work by a feed screw g carried by a saddle n and is itself carried by a lower main slide to which longitudinal feed with respect to the model and work is applied. Supplementary longitudinal feed is applied to the model table by a lever k pivoted on the bed e and also on a control bar m which has a pin v engaging a slot w on the saddle so that the bar moves with the table f in the transverse, but not in the longitudinal, direction. The transverse feed of the work table is reduced by a chain drive s from the feed screw g to a feed screw q. In an alternative method of modifying the feed of a table, a rack z<SP>1</SP>. Fig. 2, corresponding to the control bar m, engages a pinion y<SP>1</SP> on a shaft having a pinion x<SP>1</SP> engaging a rack on the underside of the table h<SP>1</SP>. The degree of reduction can be varied by placing the lever k in a different pivot hole in the bed e and by changing the sprockets or pinions in the other drives. The cutters or grinding wheels c, and the detector wheel d, are mounted' on an arm a pivoted on a shaft b from which the cutter shaft is driven. The position of the cutter shaft on the arm may be adjustable, and the detector wheel and cutter shaft may be on opposite sides of the pivot so that the work is of opposite hand to the model. In operation, the saddle n is raised until the work pieces are in position for an initial series of cuts of the correct depth to be made, and the detector wheel is lowered by means of a slide d<SP>1</SP> until it contacts the model. Successive series of cuts are taken until, for the final series, the axes of the detector wheel and the cutter and pivot shafts are in line. The supplementary longitudinal feed may be applied to the work and the supplementary transverse feed to the model, or both supplementary feeds may be applied to the same element. The Provisional Specification describes also a feed-modifying mechanism in which a lever is pivoted at one end on the upper main slide, and has pin-and-slot connections at the other end and at some intermediate point with a fixed part of the machine and with a work or model table respectively.
Patent GB-932963-A (GB)
Title: Improvements in or relating to handpieces for dental drills or the like
IPC: A61C1/05
Filed: 1960-10-06
Abstract: 932,963. Dental handpieces. SIEMENSREINIGER-WERKE A.G. Oct. 6, 1960 [Oct. 9, 1959], No. 34306/60. Class 81 (2). [Also in Group XXVI] In a dental handpiece having a head housing a compressed air turbine, the turbine shaft 9 is rad ally mounted on both sides of the wheel 8 in axial compressed air bearing gaps 28, 29 which are fed by radial air supply gaps 35 and which merge with radial bearing gaps 42 adjoining end faces of the wheel. Compressed air is conveyed through a conduit 13 and branch conduits 14, 15 in the handpiece to annular grooves 30 in two nozzle rings 20, 21 one on each side of the turbine wheel, the nozzle rings 20, 21 being a suction fit in the turbine housing 7. Air passes from the grooves to the axial bearing gaps 28, 29 by way of radial bores 31 in the nozzle rings and in distribution rings 22, 23 which fit inside the nozzle rings, axial bores 33 in the distribution rings and the radial air supply gaps 35 at each end of the distribution rings. Air from both axial bearing gaps passes towards the wheel to supply the radial bearing gaps 42 which hold the turbine against axial pressure, and along helical grooves 40 in the turbine shaft towards the bases 38 of recesses defining the blades 37 to assist in driving the wheel. Also, air passes forwardly from the front axial bearing gap 28 to atmosphere by way of an annular bearing gap 45 between the shaft and a front housing cover 11 and rearwardly from the rear axial bearing gap 29 to atmosphere by way of an aperture 46 in the rear housing cover 12. The wheel has, on each side of a central rib 36, two rows of blades defined by frusto-conical recesses having an elliptical cross-section. The blades are inclined to the shaft and the central plane of the wheel. Driving air from the annular grooves 30 of the nozzle rings is directed by nozzles 39 in the nozzle rings against the wheel tangentially of the blade recess bases 38 and at an angle less than 90 degrees to the turbine axis. Air is exhausted from the housing through a conduit 16 in the handle. Water under pressure fed to a nozzle 18 may be directed against a tool rotated by the turbine.
Patent GB-1269355-A (GB)
Title: 0-aryl-2-pyrazoline-5-one colour couplers
Inventor: POUCKE RAPHAEL KAREL VAN
IPC: G03C7/327
Filed: 1968-07-18
Abstract: 1,269,355. 1 - Aryl - 2 - pyrazolin - 5 - ones. AGFA-GEVAERT. 20 June, 1969 [18 July, 1968], No. 34340/68. Heading C2C. [Also in Divisions C3 and G2] Novel pyrazolinones of the formula in which Q represents haloalkoxy, halothioalkyl or haloalkyl-sulphonyl, Z represents hydrogen, halogen, alkyl, alkoxy, alkylthio, alkylsulphonyl or the group Q and R 1  represents an alkyl, aryl, acyl, carbamoyl or acyloxy group each of which may be substituted, are prepared by known methods from the corresponding 1-phenyl-3- amino - 2 - pyrazolin - 5 - ones. Preferred compounds are those in which Q is CHCl 2 -SO 2 -, CH 2 Cl-SO 2 - or RCF 2 O-, RCF 2 S- or RCF 2 SO 2 -, where R is hydrogen, fluorine or polyhaloalkyl. The preparation of a variety of compounds is described. The pyrazolinones are colour couplers (see Division G2). The starting 1 -phenyl-3-amino-2-pyrazolin-5- ones are prepared from a substituted phenylhydrazine and ethyl #-ethoxy-#-iminopropionate. o- or p-(1,1,2-Trifluoro-2-chloroethoxy) phenylhydrazine is obtained by reduction of the diazonium salt of o- or p-(1,1,2-trifluoro-2- chloroethoxy) aniline. o-Difluoromethylthioaniline hydrochloride, obtained by reacting oamino-thiophenol with difluorochloromethane in the presence of KOH, is diazotized and reduced to o-difluoromethylthiophenylhydrazine. p - (1,1,2 - Trifluoro - 2 - chloroethylsulphonyl) phenylhydrazine is prepared by heating hydrazine with p - (1,1,2 - trifluoro - 2 - chloroethylsulphonyl) - chlorobenzene. 2 - Chloro - 5 - chloromethylsulphonylaniline, obtained by reducing 4 - chloro - 3 - nitrophenyl chloromethyl sulphone, is diazotized and reduced to 2-chloro-5- chloromethylsulphonylphenylhydrazine. m - Dichloromethylsulphonylphenylhydrazine hydrochloride is prepared by nitrating dichloromethylphenylsulphone reducing the resulting m-nitrophenyl dichloromethyl sulphone to m-dichloromethylsulphonylaniline and diazotizing and reducing the amine. 2-(2-Tetradecyl-4-chloro-5- methylphenoxy) ethyl chloroformate is obtained by reacting 4-chloro-m-cresol with 1-tetradecene to form 2-tetradecyl-4-chloro-5-methylphenol which is reacted with 2-chloroethanol and the resulting 2 - (2 - tetradecyl - 4 - chloro- 5-methylphenoxy)-ethanol treated with phosgene.
Patent GB-367825-A (GB)
Title: Improvements in and relating to thermionic devices
IPC: H01J1/22
Filed: 1930-11-15
Abstract: 367,825. Thermionic cathodes ; resistance materials. FREEDMAN, P., 70, Durley Road, London. Nov. 15, 1930, No. 34430. [Class 39 (i).] In thermionic devices such as highly-evacuated valves and the metallic vapour lamps and gasdischarge devices described in Specification 329,627, [Class 39 (i), Electric lamps, Arc &c.], the resistance heater for the equipotential cathode comprises a refractory conducting filament on the outer surface of a refractory insulator composed entirely of alumina or of oxides of metals of higher thermionic workfunction, i.e. lower atomic volumes, than aluminium. The filament may consist wholly of carbides, borides, or silicides of refractory metals, or partly of these compounds and partly of the metals, suitable metals being tungsten, molybdenum, zirconium, titanium, tantalum, vanadium, nickel, iron, and cobalt. A crinkled filament of tungsten or tungsten and tungsten carbide may be wound on a notched alumina plate or a spiral filament 6 may be helically wound in grooves in an alumina cylinder 5. Several filaments may be connected in series or parallel and several heaters may co-operate with one cathode. The space between the filament and the cathode 9 is preferably not filled with solid material and is as small as possible and so small compared with the mean free path in the gas that " flash-over " between the heater and the cathode is avoided. This space may alternatively be filled with, and the filament coated with, alumina &c. To heat the cathode above its normal operating temperature in order to activate it and to free the heater of gas during manufacture, one or more auxiliary heating resistances may be provided and may comprise a tungsten spiral 8 embedded in or threaded through the insulator 5. The cathode may be of the kind described in Specification 346,050.
Patent GB-956300-A (GB)
Title: Method for the sealing of gelatin capsules
IPC: A61J3/07
Filed: 1961-09-26
Abstract: 956,300. Sealing gelatin capsules. ORGANON LABORATORIES Ltd. Sept. 26, 1961 [Oct. 8, 1960], No. 34437/61. Heading B8C. Hard, telescopic, gelatin capsules containing medicaments are sealed by contacting the capsules with a solution of a sealing agent, e.g. shellac, zein, sandarac, polyvinyl pyrrolidone or cellulose-acetate-phthalate in a so-called " coating drum " and thereafter removing the solvent by evaporation.
Patent GB-1005156-A (GB)
Title: Improvements relating to circular knitting machines
IPC: D04B35/32
Filed: 1964-08-24
Abstract: 1,005,156. Knitting-machines. FRANZ MORAT G.m.b.H. Aug.24, 1964 [Sept. 18,1963], No.34560/64. Heading D1C. The stop motion devices 66 associated with the yarns being fed from the yarn supply bobbins 61 of a circular machine are accommodated in a casing 62 housing a tangential fan 69c in an inner casing 68a both of the casings having openings 70, 71 through which air from the fan is directed to keep the head of the machine free from dust.
Patent GB-390262-A (GB)
Title: Improvements in and relating to elastic couplings
IPC: F16D3/66
Filed: 1931-12-14
Abstract: 390,262. Motor-vehicle driving-gear. KAN, D. M., 1, Parklaan, Hilversum, and DRIEMAN, F. A., 24, Van Breestraat, Amsterdam, both in Holland. Dec. 14, 1931, No. 34619. Convention date, Dec. 15, 1930. [Class 79 (ii).] The Specification as open to inspection under Sect. 91 describes the mounting of a yielding coupling in the twintyred driving wheel of a motor vehicle. The coupling comprises helical springs 27a, 27b, rubber or air buffers arranged in annular grooves 18 in a series of discs 13, 17, 16, &c., the outermost discs being attached to the driving and driven members. Drive is transmitted from one disc to the next by abutments 19, 21 which bear on the spring ends. The springs 27b which operate in reverse are shorter than those 27a for forward drive. The arrangement is such that the engine may make ten to fifteen revolutions before the springs are sufficiently compressed to drive the wheels. This subjectmatter does not appear in the Specification as accepted.